• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Energetics of the water oxidation reaction in photosynthesis: Elucidation by spectroelectrochemistry

Research Project

Project/Area Number 19H02674
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 32010:Fundamental physical chemistry-related
Research InstitutionNagoya University

Principal Investigator

Kato Yuki  名古屋大学, 理学研究科, 講師 (10376634)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords光合成 / 赤外分光 / 酸化還元電位 / 電子伝達反応 / 水分解反応 / 光化学系II / 赤外分光法 / 分光電気化学法 / マンガンクラスター / 酸素発生 / FTIR
Outline of Research at the Start

本研究課題は、光合成反応のうちで最大の謎とされている水分解・酸素発生反応におけるエネルギー論の解明を目的に、水分解の反応部位であるマンガンクラスターの酸化還元電位Emの実測に挑むものである。果たして光化学系IIではどれくらいのエネルギーで水を酸化しているのだろうか?という学術的「問い」に答えるべく、フーリエ変換赤外(FTIR)差スペクトル法を分光電気化学法に適用した計測系を駆使してEmの実測に取り組むことにより、天然の水分解反応部位の作動電位を物理化学的に解析する。実測したマンガンクラスターのEm値を基に、水分解反応におけるエネルギー論を明らかにすることが本研究の最終的な目的である。

Outline of Final Research Achievements

In this research project, redox potentials of the Mn cluster and cofactors on the electron transfer chain in photosystem II were investigated to elucidate the energetics of the water oxidation and oxygen evolving reactions. By applying fourier transform infrared (FTIR) spectroscopy combined with electrochemistry, redox potentials of the relating cofactors were directly measured, and then on the basis of the obtaiend potential values, the factors affecting the energetics of the electron transfer in PSII was revealed. Furthermore, the mechanism of the electron transfer was also clarified.

Academic Significance and Societal Importance of the Research Achievements

本研究課題の成果によって、光合成における水分解及び電子伝達反応のエネルギー論が明らかにされ、反応機構に関して多くの知見が得られた。天然の光合成の反応メカニズムは、人工光合成の実用化の上で有用な手本となるものであり、エネルギー問題・環境問題の解決につながる研究となりうるものである。本研究課題で得られた知見は、人工光合成の実用化に対して物理化学的側面から有用な情報となりうるものであり、学術的意義のみならず、社会的にも意義があるものと考えられる。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (29 results)

All 2023 2022 2021 2020 2019 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 2 results) Presentation (20 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Journal Article] Redox properties and regulatory mechanism of the iron-quinone electron acceptor in photosystem II as revealed by FTIR spectroelectrochemistry2022

    • Author(s)
      Y. Kato, T. Noguchi
    • Journal Title

      Photosynth. Res.

      Volume: -- Issue: 2 Pages: 135-151

    • DOI

      10.1007/s11120-021-00894-4

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ATR-FTIR Spectroelectrochemical Study on the Mechanism of the pH Dependence of the Redox Potential of the Non-Heme Iron in Photosystem II2021

    • Author(s)
      Y. Kato, H. Watanabe, and T. Noguchi
    • Journal Title

      Biochemistry

      Volume: 60 Issue: 27 Pages: 2170-2178

    • DOI

      10.1021/acs.biochem.1c00341

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of Stromal and Lumenal Side Perturbations on the Redox Potential of the Primary Quinone Electron Acceptor Q<sub>A</sub> in Photosystem II2021

    • Author(s)
      Y. Kato and T. Noguchi
    • Journal Title

      Biochemistry

      Volume: 60 Issue: 48 Pages: 3697-3706

    • DOI

      10.1021/acs.biochem.1c00624

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A gold nanoparticle conjugate with photosystem I and photosystem II for development of a biohybrid water-splitting photocatalyst2020

    • Author(s)
      Kawahara Kousuke、Inoue-Kahino Natsuko、Namie Keisuke、Kato Yuki、Tomo Tatsuya、Shibata Yutaka、Kashino Yasuhiro、Noguchi Takumi
    • Journal Title

      Biomedical Spectroscopy and Imaging

      Volume: 9 Issue: 1-2 Pages: 73-81

    • DOI

      10.3233/bsi-200200

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Structural Dynamics of a Protein Domain Relevant to the Water-Oxidizing Complex in Photosystem II as Visualized by High-Speed Atomic Force Microscopy2020

    • Author(s)
      Tokano Takaya、Kato Yuki、Sugiyama Shogo、Uchihashi Takayuki、Noguchi Takumi
    • Journal Title

      The Journal of Physical Chemistry B

      Volume: 124 Issue: 28 Pages: 5847-5857

    • DOI

      10.1021/acs.jpcb.0c03892

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Protonation State of a Key Histidine Ligand in the Iron-Quinone Complex of Photosystem II as Revealed by Light-Induced ATR-FTIR Spectroscopy2020

    • Author(s)
      Kimura Masakazu、Kato Yuki、Noguchi Takumi
    • Journal Title

      Biochemistry

      Volume: 59 Issue: 45 Pages: 4336-4343

    • DOI

      10.1021/acs.biochem.0c00810

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Does the water-oxidizing Mn4CaO5 cluster regulate the redox potential of the primary quinone electron acceptor QA in photosystem II? A study by Fourier transform infrared spectroelectrochemistry2019

    • Author(s)
      Kato Yuki、Ohira Ayaka、Nagao Ryo、Noguchi Takumi
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - Bioenergetics

      Volume: 1860 Issue: 12 Pages: 148082-148082

    • DOI

      10.1016/j.bbabio.2019.148082

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] FTIR Microspectroscopic Analysis of the Water Oxidation Reaction in a Single Photosystem II Microcrystal2019

    • Author(s)
      Kato Yuki、Haniu Satoshi、Nakajima Yoshiki、Akita Fusamichi、Shen Jian-Ren、Noguchi Takumi
    • Journal Title

      The Journal of Physical Chemistry B

      Volume: 124 Issue: 1 Pages: 121-127

    • DOI

      10.1021/acs.jpcb.9b10154

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 光化学系IIにおけるチロシンDの酸化還元電位の評価2023

    • Author(s)
      加藤祐樹, 岩銅壮平, 政本彩帆, 三野広幸, 野口巧
    • Organizer
      第64回日本植物生理学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 分光電気化学法による光化学系IIチロシンDの酸化還元電位の評価2023

    • Author(s)
      加藤祐樹, 岩銅壮平, 政本彩帆, 三野広幸, 野口巧
    • Organizer
      令和4年度生物物理中部支部講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 光化学系IIにおいて第一キノンQAの酸化還元電位はストロマおよびルーメン側の構造的摂動により変動する2022

    • Author(s)
      加藤祐樹, 野口 巧
    • Organizer
      第29回光合成セミナー
    • Related Report
      2021 Annual Research Report
  • [Presentation] 光合成光化学系IIにおけるストロマおよびルーメン側の構造的摂動が第一キノンQAの酸化還元電位に及ぼす影響2022

    • Author(s)
      加藤祐樹, 野口 巧
    • Organizer
      第48回生体分子科学討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 光化学系IIにおける構造的摂動が第一キノン電子受容体QAの酸化還元電位に及ぼす影響:FTIR分光電気化学法による解析2022

    • Author(s)
      加藤祐樹, 野口 巧
    • Organizer
      2022年電気化学秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 光化学系IIにおけるストロマおよびルーメン側における摂動が第一キノン電子受容体QAの酸化還元電位に及ぼす影響2022

    • Author(s)
      加藤祐樹, 野口 巧
    • Organizer
      第60回日本生物物理学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 光化学系IIにおけるストロマおよびルーメン側における摂動が第一キノンQAの酸化還元電位に及ぼす影響2022

    • Author(s)
      加藤祐樹, 野口巧
    • Organizer
      生物物理中部支部講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Effects of herbicide and formate on the redox potential of the primary quinone QA in photosystem II2021

    • Author(s)
      加藤祐樹、野口巧
    • Organizer
      日本植物生理学会第76回年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 光化学系IIにおける除草剤およびギ酸イオンが第一キノンQAの酸化還元電位に及ぼす影響2021

    • Author(s)
      加藤祐樹, 野口 巧
    • Organizer
      第11回日本光合成学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 光化学系II 微結晶における水分解反応の赤外分光解析2021

    • Author(s)
      加藤祐樹、秋田総理、中島芳樹、埴生悟史、菅倫寛、梅名泰史、沈建仁、野口巧
    • Organizer
      第47回生体分子科学討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 光化学系Ⅱにおける第二キノン電子受容体QBへの2段階プロトン移動の時間分解赤外分光検出2021

    • Author(s)
      伊藤帆奈美、加藤祐樹、野口巧
    • Organizer
      第59回日本生物物理学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] FTIR spectroelectrochemical study on the mechanism of the pH dependence of the redox potential of the non-heme iron in photosystem II2020

    • Author(s)
      Yuki Kato, Hiroki Watanabe, Takumi Noguchi
    • Organizer
      第58回生物物理学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Time-resolved infrared detection of electron transfer between quinone electron acceptors QA and QB in photosystem II2020

    • Author(s)
      伊藤帆奈美、加藤祐樹、野口巧
    • Organizer
      第58回生物物理学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 高速原子間力顕微鏡を用いた光化学系IIの動態観察2020

    • Author(s)
      戸叶貴也、加藤祐樹、杉山翔吾、野口巧、内橋貴之
    • Organizer
      日本生体エネルギー研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 顕微赤外分光法を用いた光合成光化学系IIの単一微結晶における水分解反応の解析2020

    • Author(s)
      加藤祐樹, 埴生悟史, 中島芳樹, 秋田総理, 沈 建仁, 野口 巧
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 顕微赤外分光法による光化学系IIの単一微結晶における水分解反応の解析2019

    • Author(s)
      加藤祐樹, 埴生悟史, 中島芳樹, 秋田総理, 沈 建仁, 野口 巧
    • Organizer
      第10回日本光合成学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] FTIR study on the water oxidation reaction in photosystem II microcrystals2019

    • Author(s)
      Yuki Kato, Fusamichi Akita, Yoshiki Nakajima, Satoshi Haniu, Michihiro Suga, Yasufumi Umena, Jian-Ren Shen, Takumi Noguchi
    • Organizer
      10th International Conference Photosynthesis and Hydrogen Energy Research for Sustainability -2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Infrared microspectroscopic study on the water oxidation in a single photosystem II microcrystal2019

    • Author(s)
      Yuki Kato, Satoshi Haniu, Yoshiki Nakajima, Fusamichi Akita, Jian-Ren Shen, Takumi Noguchi
    • Organizer
      第57回日本生物物理学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Dynamics of photosystem II protein complexes as observed by high speed atomic force microscopy2019

    • Author(s)
      Takaya Tokano, Yuki Kato, Syogo Sugiyama, Takumi Noguchi, Takayuki Uchihashi
    • Organizer
      第57回日本生物物理学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] FTIR microspectroscopic study on the water oxidation in a single photosystem II microcrystal2019

    • Author(s)
      Yuki Kato, Satoshi Haniu, Yoshiki Nakajima, Fusamichi Akita, Jian-Ren Shen, Takumi Noguchi
    • Organizer
      3rd International Solar Fuels Conference (ISF-3) International Conference on Artificial Photosynthesis-2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 名古屋大学大学院理学研究科 光生体エネルギー研究室ホームページ

    • URL

      https://www.bio.phys.nagoya-u.ac.jp/

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi